Normograms preparation and interpretation for 400/ 800 kV class of converter transformers/reactors with and without oil using sweep frequency response analysis ( SFRA )

2021 ◽  
Author(s):  
Harish K. Sharma ◽  
Savita Nema ◽  
R. K. Nema
Keyword(s):  
Frequency Response ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Sweep Frequency

scholarly journals SFRA, Detect of Winding Deformation in Power Transformer

2020 ◽  
Vol 9 (5) ◽  
pp. 1392-1395
Keyword(s):  
Frequency Response ◽  
Power Transformer ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Sweep Frequency ◽  
Cause Analysis ◽  
Root Cause ◽  
Input And Output ◽  
Voltage Signal ◽  
Hidden Fault

The sweep frequency response analysis is extensively used technique for detect hidden fault and condition monitoring of power transformer. The operation is administered by supply a coffee voltage signal of varying frequencies to the transformer windings and measuring both the input and output signals. These two signals give the specified response of the ratio is named the transfer function of the transformer from which both the magnitude and phase are often obtained. Frequency response is change as measured by SFRA techniques may indicate a phase transition inside the transformer, then causes of fault identified and investigation is required for root cause analysis.

Sweep frequency response analysis based diagnosis of shorts within transformer windings

2017 ◽  
Vol 11 (17) ◽  
pp. 4274-4281 ◽  
Author(s):  
Rajesh Rajamani ◽  
Muthaiah Rajappa ◽  
Balasubramanian Madanmohan
Keyword(s):  
Frequency Response ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Sweep Frequency

scholarly journals The study of sweep frequency response analysis for inspecting the performance of transformer

2020 ◽  
Vol 1595 ◽  
pp. 012016
Author(s):  
M A Habibi ◽  
A A Zain ◽  
F A P Sudarto ◽  
A Kusumawardana ◽  
S Wibawanto ◽  
...  
Keyword(s):  
Frequency Response ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Sweep Frequency

Study on locating transformer internal faults using sweep frequency response analysis

2017 ◽  
Vol 145 ◽  
pp. 55-62 ◽  
Author(s):  
Mahdi Khanali ◽  
Amir Hayati-Soloot ◽  
Hans Kristian Høidalen ◽  
Shesha Jayaram
Keyword(s):  
Frequency Response ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Sweep Frequency ◽  
Internal Faults
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